<?php
namespace Util;

class KdNiao 
{

    private $EBusinessID;
    private $AppKey;
    private $RequestURL = 'http://api.kdniao.cc/Ebusiness/EbusinessOrderHandle.aspx';

    public function __construct($config)
    {
        $this->EBusinessID = $config['EBusinessID'];
        $this->AppKey = $config['AppKey'];
    }

    public function getOrderTransByNum($expressNum)
    {
        $data = ['LogisticCode' => $expressNum];
        $shipper = $this->getShipperCode($data);
        if ($shipper['Success']) {
            $requestData = [
                'OrderCode' => '',
                /* 此处默认取第一间，有缺陷 */
                'ShipperCode' => $shipper['Shippers'][0]['ShipperCode'],
                'LogisticCode' => $expressNum,
            ];
            $ret = $this->getOrderTracesByJson($requestData);
            $ret = json_decode($ret, true);
            if ($ret['Success']) {
                $ret['ShipperName'] = $shipper['Shippers'][0]['ShipperName'];
                return $ret;
            }
        }
        return false;
    }

    /**
     * Json方式 查询订单物流轨迹
     */
    public function getOrderTracesByJson(array $requestData)
    {
        /*$requestData= "{'OrderCode':'','ShipperCode':'EMS','LogisticCode':'9764541841122'}";*/
        $requestData = json_encode($requestData);
        $datas = array(
            'EBusinessID' => $this->EBusinessID,
            'RequestType' => '1002',
            'RequestData' => urlencode($requestData) ,
            'DataType' => '2',
        );
        $datas['DataSign'] = $this->encrypt($requestData, $this->AppKey);
        $result=$this->sendPost($this->RequestURL, $datas);	
        
        //根据公司业务处理返回的信息......
        
        return $result;
    }

    /**
     * Json方式 单号识别
     */
    public function getShipperCode(array $LogisticCode)
    {
        /*$requestData= "{'LogisticCode':'51285169565'}";*/
        $requestData = json_encode($LogisticCode);
        $datas = array(
            'EBusinessID' => $this->EBusinessID,
            'RequestType' => '2002',
            'RequestData' => urlencode($requestData) ,
            'DataType' => '2',
        );
        $datas['DataSign'] = $this->encrypt($requestData, $this->AppKey);
        $result = $this->sendPost($this->RequestURL, $datas);	
        $result = json_decode($result, true);
        return $result;
    }
        
    /**
     *  post提交数据 
     * @param  string $url 请求Url
     * @param  array $datas 提交的数据 
     * @return url响应返回的html
     */
    function sendPost($url, $datas) 
    {
        $temps = array();	
        foreach ($datas as $key => $value) {
            $temps[] = sprintf('%s=%s', $key, $value);		
        }	
        $post_data = implode('&', $temps);
        $url_info = parse_url($url);
        if(empty($url_info['port']))
        {
            $url_info['port']=80;	
        }
        $httpheader = "POST " . $url_info['path'] . " HTTP/1.0\r\n";
        $httpheader.= "Host:" . $url_info['host'] . "\r\n";
        $httpheader.= "Content-Type:application/x-www-form-urlencoded\r\n";
        $httpheader.= "Content-Length:" . strlen($post_data) . "\r\n";
        $httpheader.= "Connection:close\r\n\r\n";
        $httpheader.= $post_data;
        $fd = fsockopen($url_info['host'], $url_info['port']);
        fwrite($fd, $httpheader);
        $gets = "";
        $headerFlag = true;
        while (!feof($fd)) {
            if (($header = @fgets($fd)) && ($header == "\r\n" || $header == "\n")) {
                break;
            }
        }
        while (!feof($fd)) {
            $gets.= fread($fd, 128);
        }
        fclose($fd);  
        
        return $gets;
    }

    /**
     * 电商Sign签名生成
     * @param data 内容   
     * @param appkey Appkey
     * @return DataSign签名
     */
    function encrypt($data, $appkey)
    {
        return urlencode(base64_encode(md5($data.$appkey)));
    }
}